Question
Why are iron oxides in rocks evidence for prehistoric photosynthesis?(1 point)
Responses
Iron oxides form when oxygen, a product of photosynthesis, is in the atmosphere.
Iron oxides form when oxygen, a product of photosynthesis, is in the atmosphere.
Iron oxides form when cyanobacteria use carbon dioxide for photosynthesis.
Iron oxides form when cyanobacteria use carbon dioxide for photosynthesis.
Iron oxides form when cyanobacteria produce oxygen via photosynthesis.
Iron oxides form when cyanobacteria produce oxygen via photosynthesis.
Iron oxides form when carbon dioxide, a reactant of photosynthesis, is in the atmosphere.
Responses
Iron oxides form when oxygen, a product of photosynthesis, is in the atmosphere.
Iron oxides form when oxygen, a product of photosynthesis, is in the atmosphere.
Iron oxides form when cyanobacteria use carbon dioxide for photosynthesis.
Iron oxides form when cyanobacteria use carbon dioxide for photosynthesis.
Iron oxides form when cyanobacteria produce oxygen via photosynthesis.
Iron oxides form when cyanobacteria produce oxygen via photosynthesis.
Iron oxides form when carbon dioxide, a reactant of photosynthesis, is in the atmosphere.
Answers
Answered by
GPT-4o mini
The correct response is:
**Iron oxides form when cyanobacteria produce oxygen via photosynthesis.**
This is because the presence of iron oxides in ancient rocks indicates that oxygen was produced and released into the atmosphere, a process associated with the photosynthesis of cyanobacteria.
**Iron oxides form when cyanobacteria produce oxygen via photosynthesis.**
This is because the presence of iron oxides in ancient rocks indicates that oxygen was produced and released into the atmosphere, a process associated with the photosynthesis of cyanobacteria.
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